HTC 5800 / Fusion / S720

First, there's no such thing as a "Dumb Question", for the most part.... but like what johnnj2003 said is right. On all Smart phones / PDA's obviously come with a Pre installed OS ( Operating System ), including all the bells and whistle extras. That is good thing in the sence of if you were to screw up something ,liked I've done myself in the past, to the degree were your only option is to do a "Hard Reset" Similar to Re-formating your P.C. +, it will put your device back in the same "Status" as when you first bought it, deleting everything that you downloaded / installed since you got it, But if you save all you CAB files ( Program Installers ) on Active Sync and even your memory card like I do, you can simply reinstall your programs.
To best answer you question is no, and just try to "ignore" and not use the programs that gives you night mares...Good luck !